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qmp: add block_stream command

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Add the block_stream command, which starts copy backing file contents
into the image file.  Also add the BLOCK_JOB_COMPLETED QMP event which
is emitted when image streaming completes.  Later patches add control
over the background copy speed, cancelation, and querying running
streaming operations.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2012-01-18 14:40:46 +00:00 • committed by Kevin Wolf
parent 5094a6c016
commit 12bd451fe0
12 changed files with 173 additions and 0 deletions
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6
qmp-commands.hx
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@ -648,6 +648,12 @@ Example:
EQMP
{
.name = "block_stream",
.args_type = "device:B,base:s?",
.mhandler.cmd_new = qmp_marshal_input_block_stream,
},
{
.name = "blockdev-snapshot-sync",
.args_type = "device:B,snapshot-file:s,format:s?",